Comment 3 for bug 1765668

There's no evidence that this is a kernel issue - this works fine when executing qemu directly:
  https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/1744754/comments/13

I'm not a regularly user of uvt - but it looks like the guest is booting up and you're able to talk to it over the network, but ssh isn't allowing you in. If so, maybe however uvt is passing in userdata to cloud-init isn't working somehow.

Reassigning to uvt - that's seems like a better place to start.